Donald Trump arrived to a chorus of boos as he cast his vote for his favorite Republican on Tuesday — after refusing to say definitively if he would accept the election’s outcome.

The GOP presidential nominee was accompanied by wife Melania, daughter Ivanka and son-in-law Jared Kushner as they voted just before 11 a.m. at PS 59 on East 56th Street.

“It’s a great honor, a tremendous honor” to be casting his ballot, said Trump, who said he was optimistic about his future in the Oval Office, citing “tremendous enthusiasm.”

It took the Trump clan only a few minutes to vote before they were escorted out by the Secret Service.

Trump — who has railed against a “rigged system” — was coy in radio interviews earlier in the morning when asked about accepting the will of the people.

“I want to see what happens, you know, how it goes as per our previous little chat,” Trump said on Newsradio 610 WTVN, CNN reported. “You know, you want to see. You hear so many horrible stories and you see so many things that are wrong. So we’ll take a look. Certainly, I love this country and I believe in the system, you understand that.”

“If I think everything’s on the up and up, that’s a lot different, and we can only see what happens, I hope it’s going to be very fair, I think we’re going to do very well,” he told AM Tampa Bay on 970 WFLA.